| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure of mounting a liquid detector capable of heightening detection sensitivity by simplifying a vibration mode, and reducing an influence of a vibration received from liquid. SOLUTION: This structure is equipped with a detection part 13 equipped with a vibration cavity formation base part 40 provided with a cavity 43 and a vibration part 61 on the bottom surface, and a piezoelectric element 17 formed on the vibration part 61 side; a buffer part 14 having a supply side buffer chamber 15 communicated with the cavity 43 through an upstream side passage 55, and a discharge side buffer chamber 16 communicated with the cavity 43 through a downstream side passage 56; and an elastic sealing member 29 interposed between the detection part 13 and the buffer part 14, for sealing the interval between the detection part 13 and the buffer part 14. The elastic sealing member 29 is arranged on a place other than a passage wall of a passage space where the cavity 43 is communicated with the upstream side passage 55 and the downstream side passage 56. Consequently, detection accuracy is improved, and ink liquid is reduced, to thereby reduce industrial waste. COPYRIGHT: (C)2006,JPO&NCIPI |
